What is DP series self-balancing multistage centrifugal pump?
Oct 23, 2024
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What is DP series self-balancing multistage centrifugal pump?
DP series self-balancing multistage centrifugal pump is used to transport clean water without solid particles and with a temperature below 80°C, or liquid with physical and chemical properties similar to clean water. self-balancing multistage centrifugal pump is suitable for use in mines, factories and urban water supply and drainage projects.The typical feature of this type of pump is that the traditional balancing disc system for balancing axial force is completely eliminated in the structure, and the axial force is automatically balanced by the symmetrical arrangement of the impellers. This innovation makes the multi-stage system run with the advantages of energy saving and high efficiency, stability and reliability, fewer wearing parts, and greatly reduced operating costs.
- New structure
The rotor components with symmetrically arranged impellers make the axial thrusts generated by the positive and negative impellers in operation basically offset each other, thus eliminating the need for a balance disc device with small clearance, high pressure drop, easy erosion, easy wear, and easy failure to maintain the balance of axial force, breaking through the traditional structure of multi-stage pumps.
- New technology
Unique throttling, pressure reducing devices, odd-numbered balancing devices, and auxiliary support functions.
- High efficiency and energy saving
Adopting advanced hydraulic model, the self-developed high efficiency and energy saving product; because the pump rotor does not have the wear and axial pulsation of the balance disc, the centering of the impeller and the guide vane is always in the best state, unlike the ordinary multi-stage pump structure, the efficiency will not drop significantly with the wear of the balance disc and the forward movement of the rotor parts; and there is no leakage of balance water, which reduces the volume loss, improves the overall operation efficiency of the pump, reduces the shaft power, and is 2%~3% higher than the ordinary multi-stage pump in terms of efficiency.
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- High stability
Through the optimal combination of symmetrical impeller and guide vane, reasonable matching clearance and wide axial throttling design, the pump can still maintain its high stability and extremely high operating efficiency after long-term operation.
- Good cavitation performance
The optimized hydraulic model and structural design, the special first-stage impeller double-suction structure, coupled with precise casting and reliable wear-resistant materials, make the pump have good anti-cavitation performance, the whole machine runs smoothly and has low noise, and users do not need to configure a pre-pump or increase the height of the water inlet tank.
- Easy maintenance
The quick assembly and disassembly design allows the pump to replace seals and bearings without disassembling the pump body and inlet and outlet pipes. There are no vulnerable parts such as balance discs in the pump, saving time for overhaul and inspection.
- Low maintenance rate
The use of precision casting reduces the number of vulnerable parts and maintenance and disassembly times, prolongs the product life, and avoids a series of problems caused by excessive disassembly to the greatest extent, reducing maintenance costs.
- Strong applicability
Advanced modular design, local components that have been tested by extensive use and long-term operation, and parts with high interchangeability.
The small gap balance disc device is eliminated, which is more suitable for occasions with harsher media properties than traditional multi-stage pumps.
D(P) type pump is a horizontal self-balancing centrifugal pump. It is divided into single-suction multi-stage structure and double-suction multi-stage structure according to the suction form. Its suction port is horizontal on the water inlet section, and the discharge port is vertically upward on the water outlet section. The water inlet section, middle section, water outlet section and secondary water inlet section of the pump are connected into one by tightening bolts. The head height can increase or decrease the number of pump stages.